Considering moving on from B&W...

If you like B&Ws and you have the 802s you will likely not like the Magico A3. 
I was in a process of moving on from the Martin Logan Montis that I had for several years and went to audition Magico A3 and they did nothing for me. Dark, overemphasized bass, slow and not engaging. There was a sense of having a thick blanket over the speakers. Build quality is top notch but I thought I heard some of the artifacts of the aluminum cabinet. A5s are supposed to be better but at a much higher price. 
 

I owned B&W N803 years ago and would take them over the Magico A3 any day. I would consider Focal, Sonus Faber and Wilson Audio. 
Just my opinion. Definitely audition prior to buying anything if you can. 

Although I agree, if you like B&W Magico may not work for you, I’m afraid I have to disagree with audphile1 observation. I own the A3, and they are nothing like what he described. Perhaps they were not set up correctly, or he is used to lesser neutrality. If you look at many of the latest B&W, their freq response is extremely tailored. If that is what you are after, the Magico may sound boring. Many audiophiles consider hyped trebles as detailed and exciting. To my ears, they are simply unnatural and fatiguing.

Magico are really fast and take on the character of the equipment you feed them with. So, at least to me, you have to have really good equipment or you are going to hear any shortfalls.

I did not have the 800 series but the 702S2. I really thought they were great speakers and they are but was out messing around and stopped by a dealer to listen to Dynaudio again. I was a former owner.

Auditioned Confidence 20 and the Dynaudio Heritage. I was blown away. Not just blown away but went home and thought about it for a couple of days to make sure I just didn’t have a case of wanting something new. Spent a couple of days with my 702 and went back again and listened. There was no going back. I’ve owned KEF Reference 1s, the older Dynaudio C1s. Bowers etc and these are just the best speaker in my price range I could dream of. Seriously incredible compared to the Bowers. But sound is personal.

I don’t think the Bowers strength was imaging. At least for me. The Heritage are so much better.

I know it’s hard when you can’t audition. You may look at Safe and Sound Audio in MA on-line. They have a return policy that might work. Had a pair of returns as well. If buying new they throw in the Dynaudio Stand 20 and unique bolting plate so the Heritage stays in place.

The best Dynaudio has offered in a very long time.

If you’re rocking a Mac amp, I’d take a hard look at Sonus Faber. Much warmer speaker and they pair well with McIntosh. Of course, I’m biased!